Sofuu: The AI-Native JavaScript & TypeScript Runtime

Building AI applications in JavaScript or TypeScript today usually requires duct-taping a fragile multi-process stack:

Node.js or Python running the application logic.
External vector databases (like Chroma, Pinecone, or Qdrant) running as separate network services.
Background LLM daemons (like Ollama or vLLM) communicating across localhost ports.
A 100–300 ms JSON serialization IPC penalty every time an agent passes tokens, embeddings, or memory snapshots across process boundaries.

We built Sofuu to collapse this entire architecture into a single, in-process runtime under 5.5 MB.

What is Sofuu?

Sofuu is an AI-native runtime for JavaScript and TypeScript. It is not an npm framework or a wrapper around Node; it is a standalone native binary built with QuickJS and a libuv event loop that boots in under 4 milliseconds.

Instead of orchestrating five different daemons to build an AI agent, Sofuu provides the foundational primitives directly in the runtime core:

1. In-Process Cognitive Vector Memory (QTSQ)

Sofuu includes built-in encrypted .qtsq memory containers with hardware-accelerated SIMD vector search. Embeddings and episodic memory are recalled in under 2 milliseconds directly in-process—with zero external database servers.

2. Autonomous Agent Loops & Prompt Sovereignty

Define autonomous multi-step agents with native tools, budget caps, cancel signals, and streaming observability. Sofuu guarantees prompt sovereignty: the runtime never injects hidden system prompts or biases.

3. Native Model Context Protocol (MCP)

Full first-class MCP client and server support is built directly into the standard library. Connect to existing tool ecosystems without installing extra adapter packages.

4. Sandbox v2 & 5-Shield Security

Executing untrusted agent tools or third-party plugins is protected by a deterministic firewall: filesystem jailing, domain allowlists, and instruction fuel metering.

Hello World in Sofuu

Here is how simple it is to initialize memory, query an agent, and execute tools in a single script:

// Memory + Agent + Tools + AI in 15 lines
const brain = sofuu.memory.open("project.qtsq");
brain.remember("Deployment target: AWS us-east-1");

const agent = sofuu.agent.define({
  model: "claude-3-5-sonnet",
  tools: [sofuu.tools.fs.read, sofuu.tools.web.search],
  policy: { net: ["api.github.com"], maxTokens: 4000 }
});

const result = await agent.run({
  prompt: "Inspect the repo and summarize deployment requirements.",
  context: brain.recall("deployment")
});

console.log(result.output);

Run it immediately with:

sofuu run agent.ts

(No compilation step, no node_modules, no background daemons).

100% Open Source

Sofuu is open source under the permissive MIT License.

Website & Documentation: https://sofuu.xyz
GitHub Repository: https://github.com/sofuu-runtime/sofuu
Official AI Skill: https://sofuu.xyz/SKILL.md

Try it in 10 seconds:

# macOS & Linux (auto-detects architecture)
curl -fsSL https://sofuu.xyz/install | sh

We are actively developing Sofuu and would love your feedback, bug reports, and benchmark tests!

Building AI Applications in JavaScript Without the Python IPC Tax: Introducing Sofuu